At the end of the day, where this gets interesting is the potential to change how we view the market as "the" key driver of cleantech. For China, it goes far beyond the cost per KwH, or who is going to be the patent holder. It is about diffusion of technology and doing all they can to create a "green" benefit to China (geographically and economically).

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Environmental Capital provides daily news and analysis of the shifting energy and environmental landscape. The Wall Street Journal’s Keith Johnson is the lead writer. Environmental Capital is led by Journal energy reporter Russell Gold, and includes contributions from other writers at the Journal, WSJ.com, and Dow Jones Newswires. Write us at environmentalcapital@wsj.com.